Patents by Inventor Qili Su

Qili Su has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240072390
    Abstract: A bipolar battery cell includes a stack including N current collectors, M anode electrodes, S separators, and C cathode electrodes, where N, M, S and C are integers greater than one. A first positioning member is arranged on one side of the stack and includes a first planar portion and a first slot in the first planar portion. A first one of the C current collectors extends through the first slot in the first planar portion and is folded. The first positioning member further includes a first rail portion and a second rail portion. The first rail portion and the second rail portion extend from the first planar portion. A first external tab is arranged between the first rail portion and the second rail portion and connected to the first one of the C current collectors.
    Type: Application
    Filed: March 17, 2023
    Publication date: February 29, 2024
    Inventors: Jingyuan LIU, Sherman H. Zeng, Zhe Li, Qili Su, Haijing Liu
  • Publication number: 20240030552
    Abstract: An electrode assembly for an electrochemical cell that cycles lithium ions is provided. The electrode assembly includes one or more electroactive material layers including a plurality of electroactive material particles and a plurality of binder material fibers dispersed with the electroactive material particles. At least one electroactive material particle of the plurality may have a first protective layer coated thereon, and at least one binder material fiber of the plurality may have a second protective layer coated thereon. The first and second protective layers may be the same or different. The binder material fibers can include polytetrafluoroethylene (PTFE).
    Type: Application
    Filed: September 15, 2022
    Publication date: January 25, 2024
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Dewen KONG, Qili SU, Meiyuan WU, Haijing LIU
  • Publication number: 20240021865
    Abstract: An electrochemical cell that includes a first electrode, a second electrode, and an electrolyte layer that is disposed between the first electrode and the second electrode is provided. The electrolyte layer includes a porous scaffold having a porosity greater than or equal to about 50 vol. % to less than or equal to about 90 vol. %, and a solution-processable solid-state electrolyte that at least partially fills the pores of the porous scaffold. The porous scaffold is defined by a plurality of fibers having an average diameter greater than or equal to about 0.01 micrometer to less than or equal to about 10 micrometers and an average length greater than or equal to about 1 micrometer to less than or equal to about 20 micrometers. The solution-processable solid-state electrolyte includes is selected from the group consisting of: sulfide-based solid-state particles, halide-based solid-state particles, hydride-based solid-state particles, and combinations thereof.
    Type: Application
    Filed: September 7, 2022
    Publication date: January 18, 2024
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Zhe LI, Meiyuan WU, Qili SU, Yong LU, Haijing LIU
  • Publication number: 20240021809
    Abstract: The present disclosure provides a positive electroactive material for an electrochemical cell that cycles lithium ions. The positive electroactive material includes a nickel-rich material including a plurality of solid-state particles. Each solid-state particle has a heterogeneous structure that includes a core and a shell that at least partially coats the core. The core includes a nickel-cobalt-manganese material, and the shell includes a nickel-cobalt-aluminum material. When the nickel-rich material is represented by LiNi(1-x-y-z)CoxMnyAl2O2, the nickel-cobalt-manganese material is represented by LiNi(i-x?-(y/a))Cox?Mn(y/a)O2, and the nickel-cobalt-aluminum material is represented by LiNi(i-x?-(z/b))Cox?Al(z/b)O2, where (i) 1-x-y-z>0.5, (ii) a+b=1, (iii) zx?+bx?=x, and (iv) 1-x?-(y/a)>1-x?-(z/b). In certain variations, the core and the shell define a base structure, and the heterogeneous structure further includes a buffer layer that at least partially coats the base structure.
    Type: Application
    Filed: December 5, 2022
    Publication date: January 18, 2024
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Zhe LI, Qili SU, Yong LU, Haijing LIU, Lianqi ZHANG, Yiming SUN
  • Publication number: 20240021866
    Abstract: The present disclosure provides an electrochemical cell that cycles lithium ions. The electrochemical cell includes a first electrode, a second electrode, a separator physically separating the first and second electrodes, a solid-state interlayer disposed between the separator and the first electrode, and a liquid electrolyte disposed in each of the first electrode, the second electrode, the separator, and the solid-state interlayer. The solid-state interlayer includes a plurality of solid-state electrolyte particles. The solid-state interlayer covers greater than or equal to about 85% of a total surface area of the surface of the first electrode.
    Type: Application
    Filed: September 9, 2022
    Publication date: January 18, 2024
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Zhe LI, Qili SU, Jingyuan LIU, Haijing LIU, Mark W. VERBRUGGE
  • Publication number: 20240014440
    Abstract: The present disclosure a gel polymer electrolyte for an electrochemical cell that cycles lithium ions. The gel polymer electrolyte includes a polymer host, a liquid electrolyte, and greater than or equal to about 0.1 wt. % to less than or equal to about 10 wt. % of a sulfolene additive. In certain variations, the gel polymer electrolyte also includes greater than or equal to about 0.1 wt. % to less than or equal to about 5 wt. % of an ethylene carbonate additive. The ethylene carbonate additive may be selected from the group consisting of: vinyl ethylene carbonate (VEC), fluoroethylene carbonate (FEC), vinylene carbonate, and combinations thereof. In each instance, the lithium electrolyte may include a first lithium salt, a second lithium salt that is distinct from the first lithium salt, and a third lithium salt that is distinct from the first lithium salt and the second lithium salt.
    Type: Application
    Filed: August 31, 2022
    Publication date: January 11, 2024
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Qili SU, Zhe LI, Haijing LIU, Lidan XING, Lijiao QUAN
  • Publication number: 20230411685
    Abstract: The present disclosure provides an electrolyte layer for use in an electrochemical cell that cycles lithium ions. The electrolyte layer includes a porous film that defines a plurality of voids and includes a plurality of solid-state electrolyte particles and a plurality of polymeric fibrils that connect the solid-state electrolyte particles. The electrolyte layer also includes a gel polymeric electrolyte that at least partially fills the plurality of voids in the porous film. The porous film has a thickness greater than or equal to about 2 micrometers to less than or equal to about 100 micrometers, and a porosity greater than or equal to about 10 vol. % to less than or equal to about 50 vol. %. The a gel polymeric electrolyte fills greater than or equal to about 0.1% to less than or equal to about 150% of a total porosity of the porous film.
    Type: Application
    Filed: September 1, 2022
    Publication date: December 21, 2023
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Qili SU, Zhi LI, Dewen KONG, Haijing LIU
  • Patent number: 11824159
    Abstract: An anode-free solid-state battery includes a cathode layer having transient anode elements and a bare current collector devoid of non-transitory anode material and configured to accept thereon the transient anode elements. The battery also includes a solid-state electrolyte layer defining voids and arranged between the current collector and the cathode layer. The battery additionally includes a gel situated within the solid-state electrolyte and cathode layers, to permeate the electrolyte voids and form a gelled solid-state electrolyte layer, coat the cathode layer, and facilitate ionic conduction of the anode elements between the cathode layer, the solid-state electrolyte layer, and the current collector. Charging the battery diffuses the anode elements from the cathode layer, via the gelled solid-state electrolyte layer, onto the current collector. Discharging the battery returns the anode elements, via the gelled solid-state electrolyte layer, to the cathode layer.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: November 21, 2023
    Assignee: GM Global Technology Operations LLC
    Inventors: Zhe Li, Yong Lu, Haijing Liu, Qili Su, Xiaochao Que, Mark W. Verbrugge
  • Publication number: 20230317966
    Abstract: An electrochemical cell that cycles lithium ions includes a positive electrode, a negative electrode current collector spaced apart from the positive electrode, and an ionically conductive electrolyte disposed between the positive electrode and the negative electrode current collector. The negative electrode current collector is of unitary one-piece construction and has a three-dimensional porous structure that defines an interconnected network of open pores. During charging of the electrochemical cell, lithium metal is deposited within the open pores of the negative electrode current collector.
    Type: Application
    Filed: June 29, 2022
    Publication date: October 5, 2023
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Zhe LI, Qi LU, Yong LU, Meiyuan WU, Qili SU, Haijing LIU
  • Publication number: 20230307655
    Abstract: A negative electrode for an electrochemical cell that cycles lithium ions includes a particulate component embedded in a polymeric matrix component that comprises polytetrafluoroethylene. The particulate component includes a plurality of composite particles, with each of the composite particles having a core and a selective barrier layer disposed on a surface of the core. The core of each of the composite particles includes an electroactive negative electrode material. The selective barrier layer of each of the composite particles is formulated to prevent or inhibit electrochemical reactions from occurring between lithium stored in the electroactive negative electrode material of the core and the polytetrafluoroethylene in the polymeric matrix component.
    Type: Application
    Filed: May 6, 2022
    Publication date: September 28, 2023
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Dewen KONG, Qili SU, Meiyuan WU, Haijing LIU
  • Publication number: 20230268551
    Abstract: A gel polymer electrolyte for an electrochemical cell that cycles lithium ions comprises a polymer matrix infiltrated with a liquid electrolyte solution. The polymer matrix comprises poly(vinylidene fluoride-co-hexafluoropropylene). The liquid electrolyte solution comprises a nonaqueous organic solvent, a first lithium salt in the nonaqueous organic solvent, and a second lithium salt in the nonaqueous organic solvent. The first lithium salt comprises lithium difluoro(oxalato)borate and the second lithium salt comprises lithium bis(trifluoromethanesulfonyl)imide.
    Type: Application
    Filed: May 6, 2022
    Publication date: August 24, 2023
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Zhe LI, Qili SU, Haijing LIU
  • Publication number: 20230268547
    Abstract: The present disclosure provides an electrochemical cell that cycles lithium ions, where the electrochemical cell includes an electrode, a solid-state electrolyte layer, and a solid-state interlayer disposed between the electrode and the solid-state electrolyte layer. The solid-state interlayer includes a plurality of solid-state electrolyte particles. In certain instances, the solid-state interlayer includes a plurality of through-holes dispersed therewithin. The through-holes have an average diameter between about 0.05 to about 100 micrometers. The solid-state interlay covers between about 50% and about 100% of a total surface area of the electrode. In each variation, solid-state interlayer has a thickness greater than or equal to about 0.1 to less than or equal to about 8 micrometers, and the electrochemical cell may include a polymeric gel electrolyte that at least partially fills voids between solid-state electroactive particle and solid-state electrolyte particles.
    Type: Application
    Filed: May 31, 2022
    Publication date: August 24, 2023
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Qili SU, Zhe LI, Xiaochao QUE, Haijing LIU
  • Publication number: 20230261246
    Abstract: A battery system comprises N folded bipolar batteries folded in an ā€œSā€-shaped configuration. First and second folded portions of each of the N folded bipolar batteries are arranged on opposite ends of the ā€œSā€-shaped configuration. First side portions and second side portions of each of the N folded bipolar batteries are arranged between the first and second folded portions. One or more of the first folded portions on a first one of the N folded bipolar batteries are in direct electrical contact with one or more of the second folded portions on a second one of the N folded bipolar batteries. One or more of the first side portions on a third one of the N folded bipolar batteries are in direct electrical contact with one or more of the second side portions on a fourth one of the N folded bipolar batteries.
    Type: Application
    Filed: August 12, 2022
    Publication date: August 17, 2023
    Inventors: Qili SU, Zhe LI, Jingyuan LIU, Meiyuan WU, Haijing LIU
  • Publication number: 20230261172
    Abstract: A solid-state battery system including a graphite anode is provided. The system includes a battery cell. The battery cell includes the graphite anode, a cathode, and a solid electrolyte layer. The graphite anode includes a plurality of graphite particles, wherein the plurality of graphite particles includes a first portion of the plurality of graphite particles including a plurality of relatively high specific surface area graphite particles and a second portion of the plurality of graphite particles including a plurality of relatively low specific surface area graphite particles. The solid electrolyte layer is disposed between the graphite anode and the cathode and is operable to provide lithium-ion conduction path between the graphite anode and the cathode.
    Type: Application
    Filed: June 28, 2022
    Publication date: August 17, 2023
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Zhe Li, Qili Su, Yong Lu, Meiyuan Wu, Haijing Liu
  • Publication number: 20230253618
    Abstract: A polymeric gel electrolyte for an electrochemical cell, such as a solid-state battery, is provided herein as well an electrochemical cell including the polymeric gel electrolyte. The polymeric gel electrolyte includes one or more lithium salts, a plasticizer component, an additive component, and a polymeric host. Examples of the plasticizer component include a carbonate, a lactone, a nitrile, a sulfone, an ether, a phosphate, and combinations thereof. The additive component includes a boron-containing additive and a carbonate-containing additive.
    Type: Application
    Filed: August 9, 2022
    Publication date: August 10, 2023
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Zhe LI, Qili SU, Meiyuan WU, Haijing LIU
  • Publication number: 20230253617
    Abstract: A polymeric gel electrolyte for an electrochemical cell, such as a solid-state battery, is provided herein as well an electrochemical cell including the polymeric gel electrolyte. The polymeric gel electrolyte includes one or more lithium salts, a plasticizer component, an additive component, and a polymeric host. Examples of the plasticizer component include a carbonate, a lactone, a nitrile, a sulfone, an ether, a phosphate, and combinations thereof. The additive component includes a boron-containing additive and a carbonate-containing additive.
    Type: Application
    Filed: August 9, 2022
    Publication date: August 10, 2023
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Zhe LI, Qili SU, Meiyuan WU, Haijing LIU
  • Publication number: 20230246161
    Abstract: A pre-lithiated, precursor electrode includes an electroactive material layer, a current collector, and a lithium foil disposed between the electroactive material layer and the current collector. A method of preparing an electrode to be used in an electrochemical cell is provide. The method includes preparing a pre-lithiated, precursor electrode. Preparing the pre-lithiated precursor electrode includes contacting at least a first electroactive material layer with a first surface of a lithium foil assembly, where the lithium foil assembly includes a current collector and at least a first lithium foil disposed on or adjacent to a first surface of the current collector. The method may further include contacting the prelithiated, precursor electrode with an electrolyte in the electrochemical cell, where the first lithium foil at least partially or fully dissolves when contacted by the electrolyte to form the electrode and a lithium reservoir in the electrochemical cell.
    Type: Application
    Filed: August 5, 2022
    Publication date: August 3, 2023
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Qili SU, Zhe LI, Dewen KONG, Mengyan HOU, Haijing LIU
  • Publication number: 20230246310
    Abstract: A high-power gel-assisted battery stack that cycles lithium ions is provided with two terminal electrodes having opposite polarities and at least one bipolar electrode assembly disposed therebetween. A first electrode is disposed on a first side of a bipolar current collector and a second electrode with an opposite polarity to the first electrode is disposed on a second side of the bipolar current collector. Each electrode includes a porous layer having an electroactive material and a solid-state electrolyte disposed in a polymeric binder. A polymer gel electrolyte is distributed in pores of the porous. The stack also includes at least two free-standing gel separator layers each being disposed between the at least one bipolar electrode assembly and terminal electrodes. Each respective free-standing gel separator layer comprises polyacrylonitrile (PAN) and an electrolyte distributed therein. The high-power gel-assisted battery stack has a maximum voltage rating of ?about 12V.
    Type: Application
    Filed: March 16, 2022
    Publication date: August 3, 2023
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Yong LU, Zhe LI, Mengyan HOU, Qili SU, Meiyuan WU, Xiaochao QUE, Haijing LIU, Si CHEN
  • Publication number: 20230246172
    Abstract: A positive electrode including an active layer is provided, where the active layer includes a plurality of positive electroactive solid-state particles, a lithium-source material coated on or dispersed with the positive electroactive solid-state particles in the active layer, and a polymeric gel electrolyte at least partially filling voids between the positive electroactive solid-state particles in the active layer. The lithium-source material having a theoretical specific capacity greater than or equal to about 100 mAh/g to less than or equal to about 3,000 mAh/g.
    Type: Application
    Filed: May 17, 2022
    Publication date: August 3, 2023
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Zhe LI, Qili SU, Yong LU, Meiyuan WU, Haijing LIU
  • Patent number: 11651906
    Abstract: Hybrid lithium-ion electrochemical cells include a first electrode having a first polarity and a first electroactive material that reversibly cycles lithium ions having a first maximum operational voltage and a second electrode having the first polarity with a second electroactive material having a second maximum operational voltage. A difference between the second and first maximum operational voltages defines a predetermined voltage difference. Also included are at least one third electrode including a third electroactive material that reversibly cycles lithium ions having a second polarity opposite to the first polarity, a separator, and electrolyte. A voltage modification component (e.g., diode) is in electrical communication with the first and the second electrodes.
    Type: Grant
    Filed: October 14, 2020
    Date of Patent: May 16, 2023
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Qili Su, Haijing Liu, Meiyuan Wu, Dewen Kong, Mengyan Hou